"This Powerblanket heated blanket is designed to keep 420-lb. liquid propane and other gas cylinder tanks at their optimal temperatures to maintain optimal pressure, enhance performance and increase efficiency. U.S.A. Closure Type Strap and buckle, Finish Type Vinyl outer shell, Receptacle Type Required Standard, Volts 120V, Plug Type 3-prong, Thermostat Included Yes, Compatible With 420 lb. cylinder, Amps 4.5, Watts 548, Capacity 1 Cylinder, Power Cord ft. 6, Common Usage Cylinder warmer, Dimensions L x W in. 53 x 104, Thermal Cutoff Safety Device Yes, Temperature Range F 80-90 10F, Cylinders qty. 1 420 lb. cylinder."